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Contents

README

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AP2000ATCER

Wuxi Chipown Micro electronics · DC-DC Converters · SOT-23-6L

AP2000ATCER from Wuxi Chipown Micro electronics, in a SOT-23-6L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SW output Switch pin for the external inductor, driven by the internal NMOS main switch and PMOS synchronous rectifier, with an absolute maximum rating of -0.3 V to +6 V.
2 GND power_in Power ground, which must be tied closely to VIN through a ceramic capacitor of 10 µF or greater.
3 FB input Feedback input connected to the center point of the external resistor divider, with a feedback threshold of 1.23 V and an absolute maximum rating of -0.3 V to +6 V.
4 SHDN input Shutdown control input where logic high gives normal operation and logic low gives shutdown, normally connected to VIN through a 1 MΩ resistor, with a 0.35 V to 1.50 V input threshold (0.60 V typical).
5 VOUT power_out Power output pin for the 2.5 V to 5.0 V regulated output, which sits 0.6 V below VIN while in shutdown, with an absolute maximum rating of -0.3 V to +6 V.
6 VIN power_in Power supply input that must be closely coupled to GND (pin 2) through a ceramic capacitor of 10 µF or greater, with an absolute maximum rating of -0.3 V to +6 V.

Key specifications

Parameter Value
Manufacturer Wuxi Chipown Micro electronics
Package SOT-23-6L
Category Power Management (PMIC)
Pins 6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage range 2.5 5 V 3
Feedback voltage 1.192 1.23 1.268 V -40°C ≤ TA ≤ 85°C 3
Minimum operating voltage 0.75 V VSHDN = VIN 3
Output voltage (3.3V) VOUT 3.201 3.3 3.399 V VOUT = 3.3V, IOUT = 1mA 3
Output voltage (5V) VOUT 4.85 5 5.15 V VOUT = 5V, IOUT = 1mA, VIN = 2.4V 3
NMOS current limit 600 850 mA 3
Maximum duty cycle 80 85 % VFB = 1.15V, -40°C ≤ TA ≤ 85°C 3
SHDN input threshold 0.35 0.6 1.5 V 3
Minimum startup voltage 0.85 1 V IOUT = 1mA 3
Quiescent current (shutdown mode) 0.01 1 µA VSHDN = 0V 3
Quiescent current (operating mode) 300 500 µA Measured at VOUT pin 3
NMOS switch leakage current 0.1 5 µA VSW = 5V 3
PMOS switch leakage current 0.1 5 µA VSW = 0V 3
SHDN input current 0.01 1 µA VSHDN = 5.5V 3
NMOS on-resistance (3.3V) 0.4 Ω VOUT = 3.3V 3
NMOS on-resistance (5V) 0.35 Ω VOUT = 5V 3
PMOS on-resistance (3.3V) 0.7 Ω VOUT = 3.3V 3
PMOS on-resistance (5V) 0.6 Ω VOUT = 5V 3
Line regulation 1 %/V VIN = 0.8V ~ 3.0V, IOUT = 10mA 3
Load regulation 0.02 %/mA IOUT = 1mA ~ 100mA 3
Current limit to output delay 40 ns See note 4 (design guaranteed) 3
Switching frequency 1 MHz 3
Input supply voltage (VIN) -0.3 6 V 2
SW voltage -0.3 6 V 2
FB, SHDN voltage -0.3 6 V 2
VOUT voltage VOUT -0.3 6 V 2
Operating temperature range -40 85 °C 2
Storage temperature range -65 150 °C 2
Pin temperature (soldering) 260 °C Soldering, 10 s 2

CAD (KiCad official)

  • Symbol: AP2000ATCER
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6L (KiCad packages3D, STEP)
  • 3D model files: ap2000atcer-etched.step / ap2000atcer-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap2000atcer.step / ap2000atcer.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Wuxi Chipown Micro electronics datasheet (8 pp, sha256 ca08ca46cea027c9, retrieved 2026-10-19, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF